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Anorthosite massif discovery in Madagascar
Overview
An astronaut aboard the International Space Station captured imagery of the Saririaky massif in southern Madagascar, a rock formation approximately 100 square kilometers in size. The massif is composed of anorthosite, a highly reflective igneous rock similar to the material that forms the lunar highlands on the Moon.
Geologists estimate the massif formed at least 600 million years ago during the late Precambrian through the cooling of magma beneath the Earth's surface. The surrounding geological structures suggest the area was part of a ductile shear zone, where high pressure and temperature during the formation of the supercontinent Gondwana reshaped the rock into linear patterns. Researchers have also hypothesized that a second anorthosite massif located 60 kilometers to the north may have been separated from the Saririaky formation by tectonic forces. Because lunar samples from the Apollo missions are limited, scientists utilize these Earth-based outcrops as analogues to study the Moon’s geological history.
Entities
Saririaky massif · NASA · International Space Station · International Space Station · Madagascar
Timeline
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[TECHNOLOGY] 2 sourcesNASA identifies lunar-like rock formation in Madagascar
NASA imagery reveals the Saririaky Massif in Madagascar, a 100-square-kilometer formation containing anorthosite, a rock type similar to that found in the Moon's bright lunar regions.
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[TECHNOLOGY] 2 sourcesMadagascar's Saririaky massif features moon-like anorthosite
An astronaut captured an image of Madagascar’s Saririaky anorthosite massif, a reflective rock formation similar to the Moon’s lunar highlands, providing geological insights into Earth and the Moon.
Sources
br.paipee.com · metropoles.com · nasa.gov · spaceweekly.com